IF ELSE 问题 COMMAND BATCH

Question

我在命令批处理脚本中遇到有关 IF ELSE 的问题...

在记事本中：
代码：

:CHECKACCOUNT
if /I "%user%"=="insertusername" ( GOTO :ACCOUNT ) ELSE ( GOTO :CHECKPASSACCT )

:CHECKPASSACCT
if /I "%pass%"=="insertpassword" ( GOTO :ACCOUNT ) ELSE ( GOTO :COUNTER )

在命令中：
代码：

（此时出乎意料。

完整的脚本代码：

@echo off

::SETTINGS:::::::::::::::::::::::
set filetxt =userpass.txt
set log=logfile.log
set timer=900
::set default = true
::set user = 0
::set pass = 0
:::::::::::::::::::::::::::::::::


:STARTER
ECHO.>>%log%
ECHO ========START========>>%log%
SetLocal EnableDelayedExpansion
Set n=
Set _InputFile=%filetxt%
For /F "tokens=*" %%I IN (%_InputFile%) DO (
Set /a n+=1
Set acct!n!=%%I
)
set router_ip=%acct1%
set user=%acct2%
set pass=%acct3%
GOTO :CHECKFILE1


:CHECKFILE1
CLS
IF EXIST curl.exe ( GOTO :CHECKFILE2 ) else (
ECHO ERROR: curl.exe was not found.>>%log%
ECHO ERROR: curl.exe was not found.
ECHO.
ECHO.
GOTO :PAUSEEXIT
)

:CHECKFILE2
CLS
IF EXIST sleep.exe ( GOTO :CHECKACCOUNT ) else (
ECHO ERROR: sleep.exe was not found.>>%log%
ECHO ERROR: sleep.exe was not found.
ECHO.
ECHO.
GOTO :PAUSEEXIT
)

:CHECKACCOUNT
if /I "%user%"=="insertusername" GOTO ACCOUNT
GOTO CHECKPASSACCT

:CHECKPASSACCT
if /I "%pass%"=="insertpassword" GOTO ACCOUNT
GOTO COUNTER

:ACCOUNT
CLS
::if %default% = true ( GOTO :COUNTER ) ELSE (
ECHO To edit/change USERNAME and PASSWORD... Please type: OPTION
ECHO.
SET /P user="Please enter the username of your Router:"
IF /I %user%==OPTION ( Goto :EDITBAT )
CLS
ECHO To edit/change USERNAME and PASSWORD... Please type: OPTION
ECHO.
SET /P pass="Please enter the password of your Router:"
IF /I %pass%==OPTION ( Goto :EDITBAT )
CLS
set /a i = 1
GOTO :CHECKACCOUNT
::)

:EDITBAT
start /WAIT notepad %filetxt%
set router_ip=%acct1%
set user=%acct2%
set pass=%acct3%
GOTO :CHECKACCOUNT

:COUNTER
IF %i%==0 ( GOTO :RESETROUTER ) ELSE (
ECHO WAIT %i% seconds...
sleep 1
set /a i = i - 1
CLS
GOTO :COUNTER
)


:RESETROUTER
CLS
ECHO READY to RESET....
ECHO Preparing....
sleep 2

sleep 2
CLS
ECHO Processing....
sleep 5

sleep 2
CLS
ECHO Success....
sleep 5
set /a i = %timer%
CLS
GOTO :COUNTER

:PAUSEEXIT
PAUSE

:EXIT
ECHO.>>%log%
ECHO ========END OF LOG FILE========>>%log%

Answer 1

您看到的错误来自错误的格式。不要将所有内容都放在一行上。相反，使用这个：

if /I "%user%"=="insertusername" (
     GOTO :ACCOUNT 
) ELSE (
     GOTO :CHECKPASSACCT 
)

更深层的根本原因是：goto :somewhere 命令需要以换行符终止。

Answer 2

您可以将其简化为：

:CHECKACCOUNT
if /I "%user%"=="insertusername" GOTO ACCOUNT
GOTO CHECKPASSACCT

:CHECKPASSACCT
if /I "%pass%"=="insertpassword" GOTO ACCOUNT
GOTO COUNTER

不需要 ELSE 语句。由于 IF 块会跳转到其他地方，因此将第二个 GOTO 放在下一行或 ELSE 块中应该是等效的。

此外，在定义 GOTO 目标时需要前导冒号，但在 GOTO 语句本身内引用目标名称时则不需要。

Answer 3

该问题与显示的代码无关！

问题在于，

:COUNTER
IF %i%==0 ( GOTO :RESETROUTER ) ELSE (

由于变量 i 未定义，该行将扩展为

IF ==0 ( GOTO :RESETROUTER ) ELSE (

That is a invalid expression。

要发现如此简单的语法失败，您应该使用 ECHO ON 启用调试。

Answer 4

您不需要使用括号。你基本上是在告诉系统
“如果 %user% 是 insertusername (”，它询问“‘(’应该做什么？”